package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceImpl implements UserService {
    public static final String WX_LOGIN="https://api.weixin.qq.com/sns/jscode2session";

    @Autowired
    private UserMapper userMapper;
    @Autowired
    private WeChatProperties weChatProperties;
    /**
     * 微信登录
     * @param userLoginDTO
     * @return
     */
    public User wxLogin(UserLoginDTO userLoginDTO){

        //调用微信接口服务，获取openenId
        String  openid  = getOpenId(userLoginDTO.getCode());
        //openid为空，表示登录失败，抛出异常
        if(openid==null){
            throw new LoginFailedException(MessageConstant.ACCOUNT_NOT_FOUND);
        }
        //判断当前用户是否是新用户,如果是，自动完成注册
        User user = userMapper.getByOpenId(openid);
        if(user==null) {
            user = User.builder()
                    .openid(openid)
                    .createTime(LocalDateTime.now())
                    .build();
            Long userId = userMapper.insert(user);
            user.setId(userId);
        }
        return user;
    }
    private String getOpenId(String code){
        Map<String,String> map=new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",code);
        //调用微信接口服务，获取openenId
        String  json  = HttpClientUtil.doGet(WX_LOGIN, map);
        JSONObject jsonObject= JSON.parseObject(json);
        String openid=jsonObject.getString("openid");
        return openid;
    }
}
